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Pre-Calculus/Trignometry

Give an example of a function whose domain is [2,infinity).

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  1. Not totally familiar with the terminology of
    [2, infinity] , don't know if the 2 is included or not

    If the 2 in included, how about

    f(x) = √(x-2)

    if the 2 is excluded, we would use something like
    f(x) = 5/√(x-2)

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  2. 5x-2

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